Showing 2,561 - 2,580 results of 13,395 for search '(( significant ((nn decrease) OR (point decrease)) ) OR ( significant increase decrease ))', query time: 0.35s Refine Results
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    Heavy metal EF values in five soil profiles. by Ziqi Li (7154915)

    Published 2025
    “…Except for profile HCZK02, the contents of 8 heavy metals generally decrease with increasing depth. As the depth of profile HCZK02 increases, As, Hg and Pb show a decrease-increase-decrease change; Cd and Cr show a decrease change and Ni shows a zigzag change; Cu and Zn show a decreasing-increasing-decreasing-increasing trend. …”
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